Regular Expressions 101

^start of line

Group 1([^ ]+)

Negated Character Class[^ ]+

+matches at least one character outside the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

: the literal text :

.*any character (except for line terminators), repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^([^ ]+) : .*$

New

abcd\eft : abdeff::
Part1 : Part2
Pa rt1 : Part2
Part1 :Part2
Part1: Part2